I am looking in to getting a S AFC. I was wondering what is the diffrence in the S AFC and the S AFC II?

I am also under the impression that this is a pretty worth while mod, if i am wrong then please correct me and tell me what is a better mod for around the same price.

thanks


1998.5 SVT Contour silver frost Intake, Exhaust, 20% mirror all around, 18" ALT stanima wheels, Eibach's, B&M short throw, 9mm ford racing wires, SAFC II, oem carbonfiber hood, MSDS headers, Panasonic head unit and one alpine 10".